Sole protector



Patented Sept. 5, 1922.

UNHTED STATES PATENT omer..

WILLIAM H. BETTS, 0F ST. LOUIS, MISSOURI, `ASSIGNOR TO BETTS SOLEPROTECTOR COMPANY, OF ST. LOUIS, MISSOURI,

A CORPORATION 0F MISSOURI.

SOLE PROTECTOR.

Application rled May 8, 1020. Serial No. 379,754.

T0 all w 7mmy t may concern Be it. known that I, VVILLIAH H. Bnrrs, acitizen of the United States, and resident of St. Louis and State ofMissouri, have invented certain new and useful Improvements in SoleProtectors, of which the following is a specification containing a full,clear, and exa-ct description, references being had to accompanyingdrawings, forming a part thereof.

My invention relates to improvements in sole protectors, and has for itsprimary object the construction of a protector whichl may be driven intothe sole or other part of the shoe and which will automatically clinchwithin the material and thereby not pass through the sole and requireany subsequent clinching, this invention being an improvement on thesole protector previously patented by me on July l5, 1919, Patent No.1,310,050.

In the drawings:

Fig. l is a side elevation of my protector;

Fig. 2 is a sectional elevation showing the same applied to the sole ofa shoe, a por tion thereof being broken away;

Fig. 3 is a bottom plan view;

Figl 4 is a top plan view; and

Fig. 5 is a side elevation of a modified form. Y Referring to thedrawings:

6 is the combined driving head and wearing plate, substantiallyelliptical and provided with prongs '7 formed at right angles to thehead 6. The inside and outside'face of each prong is parallel, thusmaking the prongs of uniform thickness throughout. The prongs 7 are alsoof uniform width throughout. The lower edge of each prong is curved, asat 8. The curvature is preferably accurately determined by the thicknessof the prong, the curvaturey being the arc of a. circle whose radius isequal to the thickness of the prong. This I deem' is the preferable wayof forming the curvature of the lower edge or driving edge of theprongs.

The prongs are formed or stamped integral with the head 6 and being ofuniform thickness vand width and having `the lower rounded edge asdescribed, the same when driven home would curve into the material thana right and wear as illustrated in F 2 and clinch themselves into thematerial without entirely penetrating the same.

`In Fig. 5 I have shown a slightly modified form of prong, themodification residing solely in the surface of their lower ends orfaces. In the modified form illustrated in Fig. 5 the prongs are formedwith plane angular faces 9, which are formed at an angle of aboutforty-five degrees or less angle. The preferable angle in the modifiedform illustrated in F ig. 5 is substantially an angle 'of forty-tivedegrees.

Having fully described .my invention what I claim is: c

A sole y.protector comprising a` relatively thin and flat combineddriving head plate and a. pair of prongs formed integral with the endsof Said plate, said prongs being parallel before being driven andk ofuniform'thickness and widths and being of the same thickness as thedriving head, and each prong having its opposing faces parallel andeachprong being' provided on its lower outer edge with a curved .facewhich in conjunction with the straight inner face forms a driving point,and to cause the prongsl to curve inwardly towardv eachv other., thecurvature of the edge substantially corresponding with the arc of acircle whose radius is equal to the thickness of the prong.

2. A protector for soles and the like'comprising a relatively thinv andHat combined driving head and wear plate and a pair of prongs formedintegral with said driving head and wear plate, said prongs projectingfrom lsaid head and being parallel to each other, each prong havingparallel opposing faces and provided on the outer faces of their lowerends with upwardly and outwardly inclined surfaces which act inconjunction with the inner surfaces of the prongs to form drivingpoints, and which also act to cause the said prongs to uniformly curveinwardly toward each other.

In testimony whereof, I have name to this specification.

,WILLIAM BTTS.

signed my

